Roberto De Zerbi says there is more to come from Leandro Trossard after his hat-trick at Anfield.

The Belgium international fired Albion into a 2-0 lead against Liverpool.

He then appeared at the far post to secure a 3-3 draw after the hosts had come back to lead.

He left the pitch with the matchball as De Zerbi’s tenure as head coach opened in sensational style.

The Italian said: “Trossard is a star, a very good player.

“When he was away with the national team, I sent him a message that he has to increase the number of goals.

“I hope he didn’t finish scoring today.

“He had a great game. He scored two fantastic goals, the first two.

“He score one very good goal because he was present at the far post.

“But I believe he can do even better.

“When I say that, it’s not because I am not happy with him today.

“But it’s because I consider him a great, great player.”

Asked for his emotions after the draw, De Zerbi said he was “tired”.

He added: “I am happy with this game. We played a very good match, we could have scored more but we play at Anfield.

“It’s my first game in the Premier League but I know Anfield, I know how difficult it is in this stadium.”